Combination metallic and carbon electrode holder.



G. HILLS. COMBINATION METALLIC AND CARBON ELECTRODE HOLDER.

APPLICATION FILED MAR. 2, 1912.

1,053,892. Patented Feb. 18, 1913. I

l of construction and combinations and ar-' UNITED STATES ra'rnn'ronrrcn.

GEORGE HILLS, 0F WESTFIELD, NEW JERSEY, ASSIGNOR T0 G. & C. ELECTRIC &ELANU FACTURING COMPANY, A CORPORATION OF NEW JERSEY.

COMBINATION METALLIC AND CARBON ELECTRODE HOLDER.

Patented Feb. 18,1913.

Application filed than 2, 1912. Serial No. across.

To all'whom it may concern I 'Be it known that I, GEORGE HILLS, aBritish subject, residing at Westfield, in the county of Union and Stateof New Jersey, have invented certain new and useful Improvements inCombination Metallic and Carbon Electrode Holders, of which thefollowing is a specification. 7

My invention relates to improvements in combination metallic andcarbonelectrode holders, the object of the invention being to provide a deviceof this character adapted for the 'arc'system of electric welding andwhich is provided with improved means for changing the current so as toreverse the polarity and enable the utilizing of both the metal and thecarbon electrode as desired. A further object is to provide a device ofthis character having improved means for securing a metal electrodewhich enables the electrode to be adjusted longitudinally and to bereadily removed and replaced as -de-. sired. i

A further object is to provide in. the ban; dle of the device animproved construction of switch controlled by a button which enables thecurrent to be reversed to reverse the polarity in accordance with theelectrode in operation. With these and other objects inview, theinvention consists in certain novel features rangements of parts, aswill be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1, is a view in longitudinalsection illustrating my improvements. Fig. 2, is a top plan view. Fig.3, is an end view showing the.

supply bars in section- Fig. 4, is a plan view of the switchstructurelocated within the handle. Fig. 5, is a view in section on an enlargedscale on the line 5-5 of Fig. 1, and Fig. 6, is a similar View on theline 66 of Fig. 1.

1, represents a hollow handle preferably of wood or other suitablenon-conducting material having a reduced end 2 onto which a metalcoupling 3 is secured. This metal coupling consists of a band 1 securedaround the end of the handle by means of a rivet 5, and connected byintegral longitudinal straps 6 with an internally screw-threaded collar7.

A metal tube 8 is screwed into the collar- .ring is turned in onedirection,

-pressure of the latter against the -tively,

- The strips 29,

outer end is externally screw-threaded for the reception of areinforcing ring 9. Into the outer end of this tube 8, a-sectional clamp10 is forced and securely, clampsga carbon electrode 11 by reason of thecam action of said'clamp when. forced into the tube as will be readilyunderstood. The tube 8, is provided near its outer end, with registeringopenings R2 through which a metal rod 13 is projected, and constitutes ametal electrode. Two cdllars 11 and 15 are fixed around the tube 8 atopposite sides of the openingv 12, and a movable ring 16 is mountedbetween said collars, normally bears against one collar, and has a camface 17 which. is adapted, to bear against the electrode 13 and securelybind it against movement. A lug 18 is provided on this ring 16 tofacilitate its rotary motion on the tube, and it will be understood thatwhen this it will clamp the electrode and when turned in the other Idirection will release the electrode to allow the same to be adjusted orreplaced. A spring washer 17 is interposed between the collar 15 andring 16to maintain a constant metal electrode.

A perforated ear 19. is made integral with .collar 7, and to oppositesides of this ear,

metal bars 20 are secured by a bolt 21 and nut 22. These bars constitutefeeders for the electric current, 'and are covered by insulation. 23; Attheir outer ends they are connected-by a coupling 24 with insulated feedwires 25 which carry'the necessary,cur rent- 'for'the electrodes. Insideof the hollow handle 1, a block 26 of insulation is secured by means ofa screw 27 This block 26 is grooved longitudinally'at its sides and topas illustrated in Fig. tion of metal strips 29, 30, and 31, respecthestrips 29 and and the strip 31 at the top of the block. and 30, areconnected with a as shown diagrammatically in Fig.1 for reversing thepolarity oi the current, while strip 31 is connected. by a wire with theground or other circuit making device. Theinner free ends of the strips29 and 30 are preferably twisted or bent as shoivn most clearly in Fig.5, and the extreme end of strip 31 is bent at right angles forming atongue 32, which extends to the lower wall of the'opening in the handle.The strip 31, near its inner end, is

suitable switch 6, for the recep-.

its

made with downwardly curved electric contacts 33, and a button 34 issecured by a screw 35 and nut-316 to said strip.

Button 34 projects through a slot 18 in the handle 1, and is adapted tobe moved to either side, so as to close the electric circuit betweeneither of the contacts 33 and the'strips 29 and 30. The tongue 32prevents strip 31 from being forced downwardly by the button, so as tocontact with both of the strips 29 and 30 at the same time, but compelsthe button to be swung laterally seats to make contact with one of saidstrips only at a time.

A metal shield 37 is secured on the inner end of the handle 1 by meansof screws 38, and a disk of fiber 391s secured to the outer end of thehandleby means of screws '40. This disk-39 has a recess 41 through whichthe wires of strips 29, 30 and-31 project. This disk 39 also serves toconfine a metal ring 42 in a restricted end-oi-the handle,

and this ring 42 has a depending bar 43 integral therewith and having anangular opening 44 in its lower end to rceive the bars 20 and supportthem in relative relation to the handle.

" My improved device is capable of a wide range of utility to enable theuse of both the carbon and the metallic electrodes. For example, whilethe drawings show the button 34 in a neutral position, the operator mayreadily move it to one side so as to close the circuit through either-oithe strips 29 and 30. Vllhen the circuit is closed through one or thesestrips, the carbon electrode 11 may be utilized as the negative pole soas to heatmetal to welding temperature. The button may then be swung toreverse the polarity and the metallic electrode 13 brought into. contactwith the metal so as to deposit the particles from I the metal electrodeand fill upany spaces which may exist forming a perfect metal joint. Thepolarity may be reversed, simply by'shizt'ting the position or thebutton 34. This device is particularly adapted for use in connectionwith boilers, locomotive frames, and in other places which-are awhwnrdto reach with devices in general use. is of course, to be understoodthat the electrodes are both positionel with relation to the metal toform an arc, whereby the maximum or heat is attained, and that the metalelectrode will gradually be eaten away when is brought to the state of-fusion by reason of the are.

Having thus described. my what T claim as new by Letters Patent s:

, invention,

The combinatioi with a handle of non conducting material, an electricconductor secured to the handle, and carbon and metallic electrodessecured to the electric/con ductor and extending at an angle thereto, incombination with a pole changer and a' reversing switch on saidhandleadapted to control said polev changer substantially as described.

2. The combination with a handle otnonconducting material, a metal tubesecured to said handle, an electrode positioned at an angle to the tube,and'means securing said electrode to the, tube, whereby the same may beadjusted longitudinally,substantially as described.

'3. The combination with a handle of nonconducting material, a metaltube secured to said handle, carbon and metallic electrodes secured insaid tube, means for supplying an electric current to said tube, in

combination with a pole changer and a reversing switch in said handleadapted to control said pole changer, substantially as described. y

4. A. combination metallic and carbon electrode holder consisting of ahollow handle, a metal tube secured to one end of said handle, a clamppositioned in the free end of said tube and adapted to receive a carbonelectrode, an opening through said tube, a metal electrode positioned insaid opening, fixed rings on the tube, and a'ring around the tubebetween said fixed rings having a cam face to engage said metalelectrode, substantially as described.

.5, Tn a device of the class described, a combination metallic andcarbon electrode holder in combination with a pole changer, said holderconsisting of a hollow handle of non-conducting material, a metal tubesecured on one end of said handle, carbon and metallic electrodessecured in said tube, electricity su ply devices connected in circuitwith said tube, a block secured in the hollow handle, three metal stripssupported in said block, wires connecting said strips to said polechanger, and a button secured to one of said strips and projectingthrough a slot in the handle, saidbutton adapted to i be moved toconnect. the intermediate strip with either or said side strips, wherebythe polarity of the current may be reversed, substantially as described.

Tn testimony whereof T have signed my C name to this specification inthe presence of; two subscribing witnesses.

1mm a2,

W i tnesses

